Update README.txt since the "setup" option is no longer needed by the Makefile.
Update README.txt since the "setup" option is no longer needed by the
Makefile.

RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,vkaravir/JSAV,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,vkaravir/JSAV